A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5945-01-535-0951
NSN 5910-01-487-8330
NSN 6130-01-433-4357
NSN 6645-00-342-5956
NSN 5985-01-537-9602
NSN 7035-00-631-3782
NSN 2925-01-327-3069
NSN 5925-01-467-9910
NSN 5855-01-384-4914
NSN 6610-01-106-5012
NSN 6610-00-382-0266
NSN 5920-01-292-0686